Exmark 3613KA serial number is >140,000. Kawasaki runs great, new carb, headgasket, blades, Valves refaced, recoil has new parts. This runs and cuts great. 5 speeds plus reverse assist. Bearings are tight. Apparently I must be smarter than the computer to load pictures. PM me and I can send you pictures. I'd like $900 out of it. I'm unsure of the hours, the engine is tight and not scored.